P261DCoolant Pump B Control Circuit High
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- How the car detects it
- With P261D the module finds the drive of coolant pump B too high, either a short to the supply side or a current above the permitted limit. VW's 2014 Touareg book uses a current test here, roughly 2.2 to 4 A as the threshold. Ford checks the component-cooling pump B of the high-temperature loop through a smart driver that reports output faults within 5 s at 11 V or more. GM's 2014-2018 hybrid tables include P261D in two fault bundles of the switchable water pump, one for control faults and one for a pump that keeps flowing. A sticking, overloaded pump can draw excess current as well, so check the pump before the module. P261A is the open circuit, P261C the low-side fault.
- What you may notice
- Malfunction indicator lamp on
- Pump switched off for protection or running permanently
- Possible battery drain if the pump keeps running after shutdown
- Likely causes
- LikelyStiff or partly seized pump drawing excess current
- PossibleControl wire shorted to a battery-voltage circuit
- RareFaulty driver stage in the engine module
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Often possible to do yourself.Typical cost: €80 – €700
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.